双反应性兼容剂对高性能完全生物降解的多乳酸/多 (丁烯基酸盐-联合甲酸盐) 复合物的协同效应
Xiangyi Wang1, Lingxiao Yu1, Fei Cong1
1Liaoning Provincial Key Laboratory for Synthesis and Preparation of Special Functional Materials, Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China; College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
International journal of biological macromolecules
|October 16, 2024
概括
双重反应性兼容剂,聚乳酸-移植-甘甲基烯酸-联合烯合聚合物 (PGS) 和环氧化大豆油 (ESO),协同增强聚乳酸/聚乙烯基酸-联合甲酸 (PLA/PBAT) 混合物特性. 这提高了生物降解性,并扩大了包装和餐具中的应用.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 可持续的高分子.
背景情况:
- 聚乳酸 (PLA) 和聚乙烯基酸盐-联合甲酸盐 (PBAT) 混合物是有前途的生物降解材料.
- 提高PLA/PBAT混合物的兼容性和性能对于其更广泛的应用至关重要.
- 现有的兼容器提供部分改进,需要新的方法.
研究的目的:
- 研究双重反应相容剂对PLA/PBAT混合物性能的协同作用.
- 为了优化配方以提高机械和热性能.
- 探索这些增强混合物在可持续应用中的潜力.
主要方法:
- 无融激素接种技术可以合成PLA-g-(GMA-co-St) 共聚合物 (PGS).
- 在PLA/PBAT混合物中同时加入PGS和环氧化大豆油 (ESO) 作为双反应相容剂.
- 混合物形态,热性能 (Tg,分解温度) 和机械性能 (冲击强度,破裂时的延长) 的表征.
主要成果:
- 双兼容剂 (PGS和ESO) 显示出协同效应,减少界面张力和改善分散.
- 最佳的ESO含量 (4重%) 带来了显著的改进:维卡特软化温度 (88.9°C),分解温度 (447.66°C),破裂时的延长 (335.16%),以及口冲击强度 (23.359.30 J/m2).
- 优化的混合物表现出均的微观结构,在断裂时具有大规模的塑料变形,表明性得到改善.
结论:
- 该研究展示了首次成功使用双反应相容剂在PLA/PBAT混合物中实现协同效应.
- 增强的PLA/PBAT混合物在保持生物降解性的同时显著提高了整体性能.
- 这些发现扩大了PLA/PBAT混合物在包装,农业和一次性餐具中的应用前景.
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